Aqua Lung Leg3nd OctopusAqualung LEG3ND octopus is pneumatically balanced resulting in smooth and easy breathing. A heat exchanger (patented) which surrounds the valve mechanism, dissipates the cold caused by gas expansion while drawing in the warmth of the ambient water. The easy to grip venturi lever prevents unwanted freeflow at the surface while giving a performance boost at depth. Includes 1m yellow hose and yellow front cover making it easy to locate in an emergency